
is an abstract CONCEPT...
Game of Thrones Season 1, Episode 6

There's an economic CONCEPT
known as a "positional good"...
The Big Bang Theory Season 3, Episode 15

so the CONCEPT of a bastard
doesn't exist.
Game of Thrones Season 7, Episode 4

with the CONCEPT
that time is an illusion.
The Big Bang Theory Season 12, Episode 19

Do you understand
the CONCEPT of blackmail?
The Big Bang Theory Season 1, Episode 16